for our healthcare system, we have adequate supplies of flu vaccine right now. no shortages. >> reporter: doctors say cases of flu are surging if california. you know fowler, ktvu channel 2 news. >> just go to ktvu.com and find the hot ticks section and then plug in your zip code. >>> a nurse at kiser hospital in oakland is refusing to get a flu shot, and now the hospital says she has to wear a mask while working with patients. >> i'm not saying that they work or they don't work. it's my personal decision not to have that one. i really encourage those who want one to get one. what i discourage is the mandating of masks for those who didn't get one. >> kathy donohue says wearing a mask isn't necessary, because she doesn't go to work sick, constantly washes her hands. kiser told us today it is simply adhering to a policy key yates bid the alameda county health department. >> a top secret announcement. facebook's invitation to an event tomorrow, and speculation on what the company will say. >> for the first time, coke is sending a message about its products and the